<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>移动端</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            font-size: 100vw;
        }

        body {
            font-size: .0427rem;
        }



        header {
            position: fixed;
            width: 100%;
            height: .128rem;
            line-height: .128rem;
            top: 0;
            left: 0;
            background-color: orange;
        }

        main {
            display: flex;
            margin-top: .128rem;
            height: calc(100vh - .256rem);
            /* 屏幕顶部和底部共减去48px */
        }

        main aside {
            flex-basis: 30%;
            background-color: white;
            overflow: auto;
        }

        main aside ul li {
            width: .1867rem;
            height: .1253rem;
            text-align: center;
            line-height: .08rem;

        }

        main aside ul li a {
            text-align: center;
            line-height: .1253rem;
            text-decoration: none;
            color: grey;
        }

        main section {
            flex-grow: 1;
            background-color: white;
            overflow: auto;
        }

        main section .item {
            height: .4rem;
            text-indent: 2em;
            border-bottom: .0027rem solid black;
            margin-bottom: .1333rem;


        }

        footer {
            position: fixed;
            width: 100%;
            height: .128rem;
            line-height: .128rem;
            bottom: 0;
            left: 0;
            background-color: lightblue;
        }
    </style>
</head>

<body>
    <header></header>
    <main>
        <aside>
            <ul>
                <li><a href="">手机</a></li>
                <li><a href="">手机配件</a></li>
                <li><a href="">电脑平板</a></li>
                <li><a href="">智能穿戴</a></li>
                <li><a href="">电视</a></li>
                <li><a href="">空调</a></li>
                <li><a href="">冰洗厨电</a></li>
                <li><a href="">小家电</a></li>
                <li><a href="">智能家居</a></li>
                <li><a href="">出行运动</a></li>
                <li><a href="">车周边</a></li>
                <li><a href="">日用百货</a></li>
                <li><a href="">商城定制</a></li>
                <li><a href="">小米服务</a></li>
                <li><a href="">儿童用品</a></li>
                <li><a href="">有品精选</a></li>
            </ul>
        </aside>

        <section>
            <div class="item">
                <h5>Xiaomi 15 Ultra</h5>
                <img src="" alt="">
            </div>
            <div class="item">项目2</div>
            <div class="item">项目3</div>
            <div class="item">项目4</div>
            <div class="item">项目5</div>
            <div class="item">项目6</div>
            <div class="item">项目7</div>
            <div class="item">项目8</div>
            <div class="item">项目9</div>
            <div class="item">项目10</div>
        </section>
    </main>
    <footer></footer>

</body>

</html>